🧴 Product Name:
Phthalic Anhydride
🔬 Scientific Name:
Phthalic Anhydride
🏷️ Trade Names:
PA, Phthalo, Phthalic Acid Anhydride, Resin intermediate, Plasticizer intermediate
⚛️ Chemical Formula:
C₈H₄O₃
🧾 CAS Number:
85-44-9
📦 HS Code:
29173500
📘 Description:
Phthalic anhydride is a white solid compound with a strong, pungent odor. It is widely used in the production of plasticizers, alkyd resins, dyes, pigments, and various organic compounds. It plays a vital role as a building block in chemical manufacturing.
⚗️ Physical & Chemical Properties:
| Property | Value / Description |
| Physical State | White crystalline solid |
| Odor | Strong, irritating |
| Melting Point | 131°C |
| Boiling Point | 284°C |
| Density | 1.53 g/cm³ |
| Water Solubility | Low (slow hydrolysis) |
| Vapor Pressure | Very low |
🧪 Production Process:
Produced by catalytic oxidation of o-xylene or naphthalene, typically using vanadium pentoxide (V₂O₅) as catalyst.
🧯 Safety & Handling:
- Hazards: Irritating to skin, eyes, and respiratory tract; may cause allergic reactions.
- Precautions: Use protective gear (gloves, goggles, ventilation).
- Packaging: Poly-lined bags, sealed drums
- Transport Info: UN No. 2214 | Hazard Class: 8 (Corrosive)
📊 Available Grades & Purity:
| Grade Type | Purity | Applications |
| Industrial Grade | ≥ 99.5% | Plasticizers, alkyd resins |
| Chemical Grade | ≥ 99.8% | Pigments, additives, specialty chemicals |
| Laboratory Grade | ≥ 99.9% | Research and testing |
🌍 Major Exporting Countries:
China, India, Iran, South Korea, Russia
🌎 Major Importing Countries:
Turkey, Germany, Pakistan, Indonesia, Egypt
🔎 SEO Keywords:
Phthalic anhydride, buy PA, plasticizer raw material, resin intermediate, phthalic acid anhydride, PA powder
